Design of outer vacuum chamber for long superconducting quadrupoles for fair super FRS energy buncher Akhter Javed1, Pal G.1, Nandi C.1, Roy S.1, Bhunia U.1, Datta A.1, Mallik C.1, Bhandari R.K.1 1VhC Centre, L/AI- Bidhan Nagar, Kolkata, 700064, India Abstract The Superconducting Fragment Separator of the Facility for Antiproton and Ion Research at GSI in Darmstadt is a large-acceptance superconducting fragment separator to efficiently separate rare isotopes. Design of the outer vacuum chamber of the long superconducting quadrupole magnet is presented in this paper. The stainless steel helium chamber for quadrupole magnet cryostat contains the Superconducting magnet assembly and weighs about 23 tons. The helium chamber and thermal shield is enclosed in a vacuum shell using specially designed support links: The outer vacuum chamber has been designed for self weight, external pressure and loads due to magnet handling and transportation. The design of the outer vacuum chamber is based on the ASME Boiler and Pressure Vessel Code Section VIII code Division 2. Stress analysis was carried out using the allowable yield strength, ultimate strength and the buckling load defined in the code. This design ensures protection against the following failure modes: plastic collapse, local failure, collapse from buckling. Top Keywords Cryostat, Finite Element Analysis, Quarupole magnet. Top |